Clutch mechanism for reclosing mechanism

Abstract

A clutch mechanism for a reclosing mechanism comprises a rotating shaft which comprises a rotating shaft body, and the edge of the rotating shaft body is provided with a first protrusion; a through hole is formed in the middle of a gear body, a rotating shaft body can stretch into the through hole and is in contact transmission connection with the gear body, a first limiting piece and a second limiting piece are oppositely arranged on the surface of the gear body, and after the rotating shaft body stretches into the through hole, a first protrusion is located between the first limiting piece and the second limiting piece. The first protrusion is located at a first position when making contact with the first limiting piece, the first protrusion is located at a second position when making contact with the second limiting piece, and the rotating shaft body can move between the first position and the second position under the action of external force. One end of the elastic piece is connected with the rotating shaft, and the other end of the elastic piece is connected with the gear. When a fault occurs in the process, the transmission mechanism and the gear are kept in an engaged state, and at the moment, the handle linked with the rotating shaft body is wrenched to realize opening and closing operation, so that the safety of a circuit accessed through the circuit breaker is ensured, and the mechanism is relatively simple in structure and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low voltage electrical apparatus, concretely relates to a clutch mechanism for reclosing mechanism. BACKGROUND

[0002] In recent years along with our country economy's rapid development, the industry has higher demand to safe electricity, thus gave birth to the development and research of circuit breaker. Circuit breaker can realize effective protection to line and electric equipment on one hand, can be installed in terminal distribution line directly on the other hand because of small size. With the development of circuit breaker, the circuit breaker with remote control, monitoring and metering gradually appears in the market. The existing circuit breaker has the function of remote opening and closing, usually through motor drive to make the contact system complete the opening and closing function, but in the process of automatic opening and closing of circuit breaker, when the motor is powered off or encounters a fault, the moving contact of circuit breaker is stuck due to the meshing between transmission gears, and then the circuit breaker is difficult to realize opening and closing action through handle, the on-site personnel cannot identify the working state of circuit breaker, which leads to great safety hidden danger of the connected circuit. SUMMARY

[0003] In view of the defects in the prior art, the utility model aims at providing a clutch mechanism for reclosing mechanism.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A clutch mechanism for reclosing mechanism, comprising:

[0006] A rotating shaft is arranged in linkage with the handle, comprising a rotating shaft body, and a first protrusion is formed on the edge of the rotating shaft body.

[0007] A gear comprises a gear body, a through hole is arranged in the middle of the gear body, the rotating shaft body can be inserted into the through hole and connected in transmission with the gear body, first and second limiters are arranged on the surface of the gear body in opposite directions, the first protrusion is located between the first and second limiters after the rotating shaft body is inserted into the through hole, the first protrusion is in the first position when it contacts with the first limiter, the first protrusion is in the second position when it contacts with the second limiter, and the rotating shaft body can move between the first and second positions under the action of external force.

[0008] An elastic member is connected to one end of the rotating shaft and the other end of the gear.

[0009] The other side of the rotating shaft body extends outward to form a second protrusion, and the second protrusion is arranged on the same center line as the first protrusion.

[0010] The second protrusion has a groove for placing a magnetic component.

[0011] The first and second protrusions are arranged in a fan shape with the center of the rotating shaft body as the center.

[0012] One end of the rotating shaft body is provided with a transmission groove for connecting with the handle.

[0013] The other end of the rotating shaft body is provided with a slot for limiting the elastic element.

[0014] The first limiting member is provided with a positioning hole for limiting the elastic member.

[0015] The elastic element is a clockwork spring.

[0016] One end of the spring is provided with a V-shaped hook.

[0017] The beneficial effects of this utility model are as follows: Under normal conditions, the transmission mechanism of the reclosing mechanism will drive the gear to open or close the circuit, and at the same time drive the rotating shaft body in contact with it to rotate synchronously, so as to realize the normal opening and closing operation. When a fault occurs during the process, the transmission mechanism and the gear maintain the meshing state. At this time, the opening and closing operation can be realized by moving the handle linked to the rotating shaft body, so as to ensure the safety of the circuit connected through the circuit breaker. Its structure is relatively simple and easy to install. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the reclosing mechanism.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model applied in a reclosing mechanism.

[0020] Figure 3 This is a schematic diagram of the structure of this utility model.

[0021] Figure 4 This is an exploded view of the present invention.

[0022] Figure 5 This is a schematic diagram of the gear structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the rotating shaft of this utility model.

[0024] Figure 7 This is a front view of the rotating shaft of this utility model.

[0025] Figure 8 This is a schematic diagram of the elastic element of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] As shown in the figure, this utility model provides a clutch mechanism for a reclosing mechanism. The clutch mechanism 400 is installed inside the reclosing mechanism 100 and meshes with the gear set 300 inside the reclosing mechanism 100 through the gear 410. The gear set is linked to the motor 200. The rotating shaft 420 of the clutch mechanism 400 is linked to the handle of the circuit breaker connected to the reclosing mechanism, thereby realizing the reclosing control.

[0029] During the automatic opening and closing of the circuit breaker, gear 410 and gear set 300 are engaged. When the circuit breaker motor 200 is de-energized or in a fault state, the circuit breaker handle can be manually turned. The handle drives the rotating shaft to rotate relative to each other, thereby pushing the moving contact and stationary contact of the circuit breaker to close or open, thus ensuring the safety of the circuit connected to the circuit breaker. Furthermore, due to the clutch design of the rotating shaft and gear, the handle can be rotated relative to each other to complete the opening and closing operation when the gear and gear set are engaged, so as not to be locked and unable to operate the opening and closing operation.

[0030] The clutch mechanism 400 consists of a rotating shaft, gears, and elastic components.

[0031] The rotating shaft 420 is linked to the handle and includes a rotating shaft body. The edge of the rotating shaft body protrudes outward to form a first protrusion 421. The first protrusion 421 is part of the rotating shaft body. Preferably, after the rotating shaft and the gear are engaged, the first protrusion is located on one side of its surface, which also serves as an axial installation limit.

[0032] Gear 410 includes a gear body with a through hole 411 in the middle. A rotating shaft body can extend into the through hole 411 and make contact with the gear body for transmission. A first limiting member 412 and a second limiting member 413 are provided opposite to each other on the surface of the gear body. After the rotating shaft body extends into the through hole 411, the first protrusion 421 is located between the first limiting member 412 and the second limiting member 413. The first protrusion 421 is in a first position when it contacts the first limiting member 412 and in a second position when it contacts the second limiting member 413. The rotating shaft body can move between the first position and the second position under the action of an external force.

[0033] The first and second limiting members are both located on the side of the through hole insertion end, and thus cooperate with the first protrusion on the rotating shaft body, so that the first protrusion can move between the first and second limiting members. Furthermore, the arc length between the first and second limiting members is the path length of the handle rotation when the circuit breaker is closed to open, so that when it moves from the first position to the second position, the action of closing to opening or from opening to closing is completed.

[0034] The elastic element 430 is connected at one end to the rotating shaft 420 and at the other end to the gear 410. The elastic element 430 is a spring-loaded spring. Adding the elastic element improves the synchronization between the outer side of the rotating shaft body and the inner side of the through hole, preventing the shaft from failing to rotate.

[0035] The other side of the rotating shaft body extends outward to form a second protrusion 422. The second protrusion 422 and the first protrusion 421 are arranged on the same center line, so that the two move along the same path when the rotating shaft body rotates.

[0036] The second protrusion 422 is provided with a groove 424 for placing a magnetic component. The magnetic component is placed in the groove and can cooperate with the Hall sensor on the circuit board to achieve accurate output of the opening and closing position signal.

[0037] The first protrusion 421 and the second protrusion 422 are arranged in a fan shape with the center of the rotating shaft body as the center, and the central angles of the two are equal, so that the relative rotation distance of the two is the same.

[0038] One end of the rotating shaft body is provided with a transmission groove 423 for transmission connection with the handle. This transmission groove is a non-circular groove, which can be linked with the handle by a pin, or it can be directly plugged into the handle to achieve transmission. It can be a triangular groove, a rectangular groove, etc.

[0039] The other end of the rotating shaft body is provided with a slot 425 for limiting the elastic element 430, with one end open so that one end of the spring can be inserted into the slot 425 through the opening.

[0040] The first limiting member 412 is provided with a positioning hole 414 for limiting the elastic member 430. The other end of the spring is bent and inserted into the positioning hole to realize the linkage between the rotating shaft and the gear.

[0041] Furthermore, the end of the mainspring that mates with the positioning hole is provided with a V-shaped hook 431. By providing the V-shaped hook, the mainspring and the positioning hole are more closely fitted, and the mainspring is less likely to fall off.

[0042] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A clutch mechanism for a reclosing mechanism, characterized in that: It includes: A pivot (420) is linked to the handle and includes a pivot body, wherein the edge of the pivot body protrudes outward to form a first protrusion (421). The gear (410) includes a gear body, a through hole (411) in the middle of the gear body, a shaft body that can extend into the through hole (411) and contact and drive with the gear body, a first limiting member (412) and a second limiting member (413) are provided opposite to each other on the surface of the gear body, and after the shaft body extends into the through hole (411), the first protrusion (421) is located between the first limiting member (412) and the second limiting member (413), and the first protrusion (421) is in a first position when in contact with the first limiting member (412), and in a second position when in contact with the second limiting member (413), and the shaft body can move between the first position and the second position under the action of external force; The elastic element (430) is connected at one end to the rotating shaft (420) and at the other end to the gear (410).

2. The clutch mechanism for a reclosing mechanism according to claim 1, characterized in that: The other side of the rotating shaft body extends outward to form a second protrusion (422), and the second protrusion (422) is arranged along the same center line as the first protrusion (421).

3. A clutch mechanism for a reclosing mechanism according to claim 2, characterized in that: The second protrusion (422) is provided with a groove (424) for placing a magnetic component.

4. A clutch mechanism for a reclosing mechanism according to claim 2 or 3, characterized in that: The first protrusion (421) and the second protrusion (422) are arranged in a fan shape with the center of the rotating shaft body as the center.

5. A clutch mechanism for a reclosing mechanism according to claim 1, characterized in that: One end of the rotating shaft body is provided with a transmission groove (423) for transmission connection with the handle.

6. A clutch mechanism for a reclosing mechanism according to claim 1, characterized in that: The other end of the shaft body is provided with a slot (425) for limiting the elastic element (430).

7. A clutch mechanism for a reclosing mechanism according to claim 1, characterized in that: The first limiting member (412) is provided with a positioning hole (414) for limiting the elastic member (430).

8. A clutch mechanism for a reclosing mechanism according to claim 1, characterized in that: The elastic element (430) is a clock spring.

9. A clutch mechanism for a reclosing mechanism according to claim 8, characterized in that: One end of the spring is provided with a V-shaped hook.

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